grobe



April 6, 19,43. .1. J. GROBE` TUBE CASING AND 'SUPPORT` Filed May 20,1939 4 Sheets-Sheet l NVENT ATTORNEY 5.

April 6, 1943. '.l. .1. GROBE.

` TUBE cAsING'AND SUPPORT F11-ed May 2o, 1939 4 Sheets-Sheet 3 April 6,1943. J. J. GROBE l TUBE cAsING AND SUPPORT Filed May 20, .1939 4Sheets-Sheet 4 ATTORNY.

Patented Apr. e, 194s UNITED STATE@ 'i 1,

it?? OFFICE TUBE CASING AND SUPERT Application May 20, 1939, Serial No.274,778

(Cl. Z50-57) 14 Claims.

My invention relates in general to electrical apparatus, especially highpotential apparatus, and has more particular reference to a shockproofcasing and support means for X-ray tubes.

An important object of the present invention is to provide improvedlight-weight support means for X-ray tube apparatus; a further objectbeing to embody the support as a casing having facilities for mountingan X-ray tube therein in readily removable fashion so that the tube,when mounted in the casing, is thoroughly insulated in shock-prooffashion.

Another important object is to provide a lightweight compact support forX-ray tubes, comprising a casing in which the tube may be mounted inposition immersed in a suitable insulating liquid, including means formaintaining the casing portions containing the tube entirely lled withthe insulating liquid, the tube mounting withal being light in weightand compact and by the same may be readily shifted to desired positionswith respect to a subject to be exposed to the action of the X-lightgenerated by the tube.

Another important object is to provide a lightweight adjustable mountingfor the tube carrier whereby the same may be shifted easily to anydesired position with respect to a subject being treated and tilted onthe mounting in order to adjust the direction toward the subject ofX-light emitted by the supported tube.

Another important object resides in providing index means for indicatingthe relatively tilted position of the mounted X-light generator.

Another important object resides in providing improved support means forthe tube casing whereby the same may be carried at a desired elevationabove a table and arranged at any point within the area of the table,the support extending compactly on one side of the table only andcomprising a single upright and having the ability not only to supportthe lamp above the table but allowing the lamp to be positioned beneaththe table and also to be swung behind the support away from the tablefor use independently of the table; a further object being to provide atube housing of such lightness and compactness as will permit themounting of the same upon the simplied, extremely compact,multiple-purpose support.

These and numerous other important objects, advantages and inherentfunctions of the invention will become apparent as the same is morefully understood from the following description, which, taken inconnection with the accompanying drawings, discloses a preferredembodiment of the invention.

Referring to the drawings, n

Figure 1 is a perspective View of radiographic apparatus providing anadjustable support for, an X-light generator in accordance with theteachings of the present invention;

Figure 2 is an enlarged perspective view of a casing for an X-lightgenerator forming a part of the apparatus shown in Figure 1;

Figure 3 is a vertical section taken substantially along the line 3-3 inFigure 1;

Figure 4 is a sectional View taken substantially along the line l-fl inFigure 3;

Figure 5 is a sectional view taken substantially along the line 5 5 inFigure 2;

Figure 6 is a sectional View taken substantially along the line 6 6 inFigure 5;

Figure 7 is an elevational View of a cable connector;

Figure 8 is a View of a support bracket;

Figure 9 is a sectional view taken substantially along the line 9-9 inFigure 8;

Figure 10 is a sectional View of washers forming part of the assembly asshown in Figure 8; and

Figure l1 is a face view of an index plate.

To illustrate the invention, the drawings show a compact apparatus foriluoroscopic examination and for radiographic purposes, comprising meansforming a support i3 for tiltably carrying a table l5 upon which may besupported a subject for X-ray exposure, a housing l1 for an X-lightgenerator, and mounting means I9 for adjustably supporting the housingand generator contained therein whereby the source of X-light may beadjusted vertically and horizontally with respect to the table l5 andmay be tilted to adjust the angularity of the X-light emitted by thegenerator, While the illustrated apparatus has many novel and convenientfeatures, the present invention is not, of course, necessarilyrestricted to the particular form of arrangement of its component partswhich are shown on the drawings to illustrate the utility of theadjustable support and the enclosed mounting for the X-light generator.

The radiographic apparatus, in Which for purposes of exposition theadjustable support and casing for the X-light generator' areillustrated, comprises the table I5 and the table support I3 on oragainst which a body may be carried in position to be picturedradiographically or otherwise expo-sed to X-rays.

i5 comprises a panel suitably supported in a The table-like elementlframe 2| which in turn is mounted on the support pedestal I3. Thispedestal in the illustrated embodiment comprises a foot portion 22 andan upstanding portion alfording a bearing 23 in which the frame 2| andtable I5 are tiltably mounted.

Cooperating means on the frame 2| and the pedestal I3, preferablycomprising a rack on the frame and suitable gears on the pedestaldrivingly connected with a hand crank, are provided for turning theframe 2| on the pedestal to any desired inclination. The frame 4may beprovided with tracks 29 and 3| along the opposite sides of the frame andunder the table top I for guiding and supporting a carriage 33 forlongitudinal movement immediately beneath the table top, the carriagebeing adapted to support a cassette or holder for film sensitive toX-light for the making of radiograms in cooperation with the X- lightgenerator in the casing I1 as a light source. The carriage 33 is freelymovable between the opposite ends of the table l5 whereby the film maybe positioned in any desired locality within the longitudinal extent ofthe table, and suitable means 34 for counterbalancing and means 36 forlocking the carriage 33 in any adjusted position within the length ofthe table top are provided.

The radiographic equipment also comprises an X-light generator 35 in theform of an X-ray tube contained in the housing l1, which housing isformed with a window through which X-rays generated in the tube 35 maybe projected outwardly of the housing I1, and means is provided forsupporting a casing Il' above the table top in position to directX-light downwardly upon a body supported on the table. The tube in thecasing I1 may be energized through suitable cables 31 connecting withthe tube within the casing whereby the entire assembly is renderedsubstantially shock-proof.

The casing I1 is tiltably mounted in a yoke 39 having a stem 4|extending in and supported by a bushing 43, which in turn is carried onan arm 45 extending from an upright 6|, the arm preferably being carriedon a pivot '59 in a frame 63 which is slidable longitudinally upon thesupport 6|.

As shown in Figure 8 the stem 4| comprises a cylindrical member 56slidingly received in the bushing 43, said member 42 at one end beingsecured on a disk 44 formed with peripheral notches 45. This disk 44extends opposite an end of the bushing 43 and has an outwardly extendingpin 48 thereon in line with the axis of the bushing 43 and forming asupport upon which a collar 52 comprising a part of the yoke 39 istiltably mounted, said collar 52 having a central opening 58 forreceiving the pin 48 and said pin carrying thereon a ber washer 56, ametal Washer 68, and a spring washer 12, the collar 52 and the washers66, 68, and 12 being held on the pin 48 as by means of a cap nut 16.

The collar 52 is provided With an offset sleeve 18 preferably formedintegrally therewith in position to overlie the notched edge of the disk44, and said sleeve 18 is fitted with a manually retractable springpressed detent 82 adapted to lock in the notches 46 in order to securethe yoke and the casing |1 and enclosed tube 35 in predeterminedangularly adjusted position on the pin 43, said adjusted positions beingdetermined by the positions of the notches 42 which are preferably suchas to hold the yoke 39 in the position shown in full lines in Figure 1and in positions rotated 75 in either direction and 180 from theposition shown in Figure l.

Suitable means, such as a socket 84 in the end of the bushing 43 and apin 86 on the disk 44 adapted to be slidingly received in the socket isprovided for preventing relative rotation of the disk 44 with respect tothe bushing 43.

Within the cylindrical extension 42 of the disk 44 extends a preferablycylindrical shell 88 adapted to move longitudinally in the sleeve 42.The case 88 has an opening in its bottom through which projects a stem92 which is fastened on the disk 44 in position extending within thecase 88. This stern 92 has a nut and washer secured on its end withinthe case 88 in position to hold a spring 94 between the bottom of thecase 88 and the washer on the stem 92, said spring encircling said stemand serving normally to draw the case 38 within the bushing 43 towardthe plate 44. The open end of the case 3S has a cap 93 threaded therein,said cap having edges overlapping the end of the sleeve 42 and the endof the bushing 43. The spring S4 thus normally retains the plate 44 andthe collar 52 of the yoke against the end of the bushing 43. However,the yoke and lamp housing may be drawn longitudinally away from the endof the bushing 43 in order to obtain additional extension in the eventthat it may be desired to position the lamp above the extreme side edgeof the table i5 opposite from the upright 6|. It will be noted, however,that when thus extended, a substantial portion of the sleeve 42 willremain within the bushing 43 to provide adequate support; that the cap9B when the parts are at maximum extension serves to hold the yokewithin the bushing 43; and that when the parts are in normal positionillustrated in Figure 8 the stem means 4| does not project outwardly ofthe bushing 43 sufficiently to. in.- terfere with the free movement ofthe cables 31 when the yoke is tilted about the axis of the bushing.

The arm 45, it will be noted, extends downwardly from the bushing 43 andthence substantially horizontally to the support bracket G3 in order notto interfere with or crimp the cables 31 when the yoke and casingr Iiiis rotated 90 in a counterclockwise direction from the position shown inFigure 1.

The illustrated casing support structure permits the casing to beadjustably tilted in the yoke 39 and be locked in adjusted position :bymeans of the manually-operable cla-mp member 2|5, and also permits theyoke 39 on the stem 4| to be tilted to any desired angular lpositionWithin the bushing 43 and locked in predetermined angular relationshipby means of the manually-operable latch 82.

The frame 63, on which the arm 45 is pivoted, may likewise be clamped inany vertically adjusted position on the support member 5|, and latchingmeans 5S is provided for the purpose of securing the arm 45 in positionon the frame E3 to support the casing I1 rrnly in position. In makingradiographic pictures of the subject on the table l5, the tube and itscasing may `be secured in position directing the K-light verticallydownwardly toward the table top, and the position of the casing l1 maybe adjusted laterally of the table top by sliding the stem 4|longitudinally in the bushing 43 when the parts are positioned as shownin Figure 1 of the drawings. The support 6| preferably extends in aVdirection at right angles with respect to the plane of the table top,and the bracket -or carriage 6,3

egairarse affords 'ameans for adjusting the vertlcahdistance between thelamp 'housing |-1 and "the ytop of the table.

The support 6| 'preferably -comprises a reinforced tubular member ofsheet' metal forming tracks 65 on its opposite sides for slidingly`cairrying the frame 63 for lon-gitudinal movem'entfon the support. Acounterweight valso may-be, 'and preferably is, arranged within thetubular -'support 6| for sliding movement along vinternallydisposedtracks. To this end, the member 6| may 'comprise-a pair of sheet metalplates '62 having flanged ends vsecured together upon Vopposite sides ofsteel track forming strips65, said strips forming internaltracks for thecounterweight 64 and external vtracks for the bracket' 63. Thecounterweight 64 Vis preferably interconnected with the :bracket 63 bymeanscf cords 51 travelling on sheaves 59 at the'opposite ends of thesupport member 6| whereby to support the frame 63 and the tube-carryingcasing |1 at any adjusted position on the support 'and also tofacilitate the movement of thetube-carryin-g assembly on the support 6|.

The support 6| and the tube-carrying assembly thereon are mounted forlongitudinal as well as lateral movement with respect to the table topi3, and to this end the member 6| is mounted on a frame 19 which in turnis mounted on the table support frame 2| for movement thereon in alongitudinal direction with respect to the table top. To this end, theframe 19 is provided with rollers 8| which extend in -suitable tracks 83formed longitudinally in the opposite sides of the frame 2|. A suitablecounterweightS, longitudinally movable in tracks 81 on the vfra-me 2|,is provided for balancing the weight of the frame 19 -and thetube-carrying elements supported thereby when the table top is tiltedfrom a horizontal position, the counter-weight 85 being interconnectedwith the opposite sides of the frame 19 by means of cords travelling onsuitable sheaves at the opposite ends of the frame 2| To provide forlateral movement of the support 6| and of the lightsource in the casing|1 with respect to the table top, the member 6| is mounted on a bracket1| forming a part of a sup-port frame 14, comprising preferably a pairof spaced rails 13 extending from the bracket 1| beneath the frame 2|and slidingly received in rollers 15 on the mounting frame 19. Thebracket 1| and the member 6| thus are supported for movement withrespect to the frame 2i in a direction normal to the direction ofmovement of the frame 19 in the tracks 8|.

It will be seen that the member 6| extends below the bracket 1| andsubstantially beneath the table top, and this arrangement permitsthe-tube casing |1 to be positioned beneath the table in the positionillustrated in dotted lines in Figure 3 of the drawings. This isaccomplished by unlatching the fastener 56, swingingr the arm 45 intothe position. shown in dotted lines at ||1 in Figure of the drawings andthen forcing the frame E3 downwardly along the upright 6| to bring thearm below the frame 14. The lamp in the casing |1 may then be invertedby turning the 1a xnp housing and yoke in the bushing 43, after whichthe arm 45 may be swung beneath the table to position the housing underthe frame 14, said frame having preferably an annular seat 54 io receivethe rim 4'9 of the housing 25 defining the X-light transmitting portionsthereof. By raising the arm 45 on the member 6| after the casing |1 hasbeen positionedopposte the seat 54, the

scopic examination.

casing-|1 :'may'ibe snuglyrengaged in the f'seat 54 to hold the sameinnposition, as shown indotted lines at -'3I'1 in Figure 3 `to projectX-light upwardly through the tabletop and througha body supportedthereon forV uoroscopic examination.

As a'convenience Fin positioning the device in the 4dotted .position311, I preferably provide a mounting at the Abottom of the member 6|upon which is rrarried a spring pressed buffer 98, the buffer-comprisinga pin inthe mounting around which is carried a helical spring with theend of 'the spring extending above the end of the pin arid'carrying apreferably rubber bulfermember Yattached to the spring. The buffer facestoward the lower end'of the frame 63 and the parts are-'so positionedthat as the frame engages the buffer vand the buffer spring iscompressed, vthe frame v(i3 will tbe resiliently supported on theupright' 6| so that the arm 45 with vcasing |1 inverted thereon needmerely be swung into position beneath the seat 54. Thereupon, the latchmeans 56 'will operate to secure the arm 45 on the frame, and as thelatch so locks the arm 45 in position, the frame 63 may be released andforced by the action of the spring pressed means 98 upwardly on themember 6| to force the casing yieldingly upon the sea-t 54. The latch56, as shown in Figure 4, comprises a pin |8| set in the arm 45 at theupper end of thebearing 59 in position to be received in one or other ofa pair of notches |83 formed in an extension |85 at the upper end of thesliding bracket B3 When the pin |8| is in one of said notches |33 thearm 45 'will occupy the position shown `in full lines, shown in Figures1 and 3 in the drawings.` When the pin |8| is inthe other of saidnotches |83 the arm will occupy the p0- sition 2|1 shown in dotted linesvin `ligure 1 of the drawings. The pin 18| may be Vlocked and thusretained in either of the notches by means of the latch member 56, whichcomprises an arm pivotedas at |81 o'n the frame 63 midway between thenotches |83. This pivoted arm has oppositely extending fingers |83 ofcam-like shape so that if the arm 45 is swung toward one of the notcheswhile they latch 56 is in latching position, the pin |8| may enga-geupon the camlike fingers |89 and tilt thelatch 'member 56 upwardly onits pivot to uncover the notch and permit the pin |8| to enter the vsamebeneath the raised latch. After the -pin thus has entered they notch,the latch of its own weight will vdrop biehind thepin into lockingposition. A ysuitable screen 5| is provided for fluoro- This screen ismounted on an arm |53 pivoted as at |55 on the bracket 1|. Suitablespring and latch means are provided in a housing |51 to normally holdthe screen in an inoperative position as shown in Figure 1. The screen,however, may be swung down over the table top when needed 'foriiuoroscopic work. The frame 14 adjacent the seat 54 may be providedwith a shutter actuated by a control table |6| under the control ofsuitable actuating means |59 conveniently located on the arm |53adjacent the Vscreen |5|.\

, The arm 45 may also be swung from the position 'shown in Figure 1 to aposition 2|1 behind the vertical support member 6|`in order to permitthe use of the lamp in the casing |1 for radiographic and fluoro'scopicpurposes, independently of the table, and when kso positioned, ofcourse, the casingmay be tilted in the bushing 43 to any desiredangularity.

It will be seen from 'the foregoing that the apparatus may be readilyadjus'ted to position the light source in the casing I1 at any desiredelevation above any desired point within the area of the table top; thatthe light source also may be positioned below the table top and also inposition behind the upright 6| for independent use. This facility isaccomplished not only by the simple -counterbalanced support meansafforded by the movement of the bracket 63 on the upright 5| and by theneat, compact arrangement of the support arm 45 and the bracket 39, butthe flexibility of the apparatus is in no small measure due to theprovision of the light-'Weight shockproof casing |1 in which the tube 35is supported. Were it not for the unusual lightness of the casing, whichin part is due to its particularly compact design, great difficultywould be encountered in supporting the lamp with suflicient rigidity ata point remote from the upright 6| to permit effective operation of thelamp for radiographic and iluoroscopic purposes. The features of theinvention, however, pertaining to the light-weight and compactconstruction of the housing I1 allow the same to be mounted on thesupport means heretofore described, which support means may convenientlybe designated as an overhung beam support in that the weight of thesupported parts is carried entirely on and through the upright 6| whichin turn is carried entirely at one side of the table. The entirearrangement provides a compact equipment in which one side, both ends,and a substantial portion of the remaining side of the table onwhich thesupport -GI is positioned are entirely free and unobstructed. `This isal valuable feature that will be greatly appreciated byroentgenologists. t

As heretofore stated, the manifold advantages and simplicities of theequipment herein illustrated and described are made possible -in part bythe novelties of design and construction of the casing |1, whichVcomprises a housing 25 preferably formed as a casting of light-weightmetal and affording-an elongated preferably cylindrical cavity 21 inwhich the X-ray tube'35 may be assembled, the ends of the cavity 21being open to facilitate insertion of the` tube therein, and covers 41comprising plates of lightweight metallic material are provided forsealing the open ends of the cavity 21 after the tub has been mounted inthe cavity.

The housing 25 is provided with an opening 48, the outer walls of thehousing being formed with an annular rim 49 at said opening, and theopening within said rim is closed by a plate 5I of material freelypervious to X-light. The tube 35 may comprise the usual sealed envelope53 in which is arranged a cathode 93 and an anode 95 adapted to functionasa source of X-rays when bombarded with electrons emitted by thecathode. Within the cavity 21and encircling the tube 35 when in place,and particularly the central portions thereof, is arranged a cylindricalsleeve 91 of lead or other material impervious to X-light, said sleeve91 having an opening 99 therein in position coinciding with the casingopening 48, and the tube is preferably supported adjacent the inner endof a cone of X-light pervious material extending in the opening 48between the tube 35 and the plate 5|, said cone being preferably formedintegral with saidplate and. its inner tbe facing surfaces being equallyspaced at al1 points therein from the facing portions of the tube 35.

The inner surfaces of the-opening 48 also are cavity 21. These chambers|01 are closed at one end by walls |09 forming a continuation of thewalls of the cavity 21, so that the chambers |01 communicate with thecavity 21 approximately opposite the ends of the tube 35. Other ends ofthe chambers |01 are formed with openings defined by seats III, in whichare sealed socket members 3 preferably of insulating material,

extending within the chambers |01 from the open ends thereof to a pointopposite the ends of the tube 35. 'I'hese socket members provideleak-proof covers for the open ends of the chambers |01 and are adaptedto receive the terminal ends of the anode and cathode cables 31, and tomake connection between the several conduc tors of the cable andterminals |35 and |4| at the bottom of the cable socket members H3.

The socket members ||3 at their inner ends carry bracket means I5 forsupporting the tube 35. The socket member ||3 at the anode end of thecasing is provided with a bracket member |2| having a portion |23carrying a headed screw |21 in position opposite a projecting element|25 atthe anode end of the tube, said projecting element beingelectrically connected with the anode and being "provided with adiametral slot to receive the member |21 as the 'tube is inserted fromthe cathode end of the casing. The socket member ||3 at the cathode end'of the casing carries a bracket member I I6 on which`is secured 'a plate||9. The' plate I9 is adapted to be removably fastened on the cathod endof the tubeby means ofa screw I 8. The plate I9 is rst attached on thetube and inserted with it into'the casing. The plate has a pair ofopenings to receivedowels |22 on the bracket IIB, and the plate has anopening |24 to take`a holding screw for fastening the plate to thel Theelectrical connection between the anode and its corresponding cable'31is accomplished through the bracket |2| andthe terminals 35 and |4| withall of the conductors ci the anode cable. Electrical connection with thecathode is accomplished by means of the cathode leads |29, which may beconnected on an insulatedterminal block |3| carried by the plate ||9.Afterinsertion of the tube in the casing conductors |33 may beconnectedbetween the terminal block and the terminals |35 disposed inthe ends of the cathode socket member I3 which preferably is formed ofinsulating material.

The cables 31 preferably comprise heavily insulatedconductors, the endsof the cable being ttedin a jack 4member |31 carrying prongs |39 whichare adapted to make Contact with the terminals |35 when the jack member|31 is inserted in the socket member ||3. The jack member |31 preferablycomprises three prongs |39, at least one of which is of a size differentfrom the others so that the jack |31 may b e inserted in onepositiononly to make proper contact between the prongs |39 and theterminals |35. One of the prongs |39 also fits a terminal |4| which isgrounded on the bracket ||1 and hence connected through the plate ||9with the cathode structure in the tube 35.

The cover members 41 are provided with annular outstanding iianges |9|and have oil filling openings |93 within the ilange |9|, a stop plug |95being provided to normally seal the iiller openings. The annular ange|9|, in each cover, is preferably provided with a depressed seat |99,and I provide a band preferably of sheet steel 29| around the outersurfaces of the annular flange |9|, the opposed ends of the band beingreceived in the seat |99 and held in place by means of a set screw 203which serves to draw the ends of the band into the depres- 4 sion andtighten the same upon the annular flange |9|. This band'provides a goodbearing surface for tiltably mounting the casing |1 in the yoke 39.

The yoke 39 has a pair of arms extending outwardly and forwardly of thecollar portion 52, the terminal portions of the arm forming split capbearings 205 in which the flanges |9|, faced with the steel band 20| atthe opposite ends of the casing, may be received. The cap bearings areprovided with index marks 201 on opposite sides thereof to cooperatewith the graduated dial plate 209, shown in Figure 11, the edges ofwhich are graduated to indicate the angularity of the casing in thebearings 205. The index plates 209 are mounted upon the cap plates 41over the filler plugs 95 by means of set screws penetrating openings 2|formed in the index plates, said set screws threading into embossments2|3 formed on the cover plates 41 preferably adjacent and within thelannular iianges |9| One of the cap bearings 205 is provided with amanually operable clamp knob 2| 5 in order to clamp the housing I1 inangularly adjusted position on the yoke 39, the other cap bearing beingfastened to a predetermined snugness on its cooperating flange |9| bysuitable screws 2|9 which may be locked in place by means of set screws22|.

It will be seen that the casing forms a sealed leak-proof enclosure forthe tube 35 which, however, may be readily replaced by removing thecovers 41. light in weight. The arrangement of the chambers |01 inposition extending alongside of the cavity 21 provides an exceedinglycompact unit and aids in reducing the weight of the casing. It isintended that the casing shall be lled with an insulating fluid such asoil in order to aid in insulating the tube 35 by oil immersion. To thisend, means |43 forming an oil reservoir is attached on the casing, saidreservoir preferably comprising an expansible member |45 sealed at oneend on a tubular fitting |41 which is threaded in an opening |49 formedin the wall of the casing 25 between the open ends of the chambers |01whereby the interior of the expansible means |45 is in communication atall times with the interior of the cavity 21. Y ielding means preferablycomprising a helical spring |63 is provided in position normally tocompress the housing |45 so as to maintain the cavity 21 and thechambers |01 around the sockets ||3 completely filled with lnsulatingoil. The springv and the expansible means |45 may be enclosed in ashell-like cover |61 having an open end adapted to be secured on a rim|59 formed on and ending outwardly of the housing 25.

In order to release the pressure of the spring |63'when filling thecasing with oil, I provide a threaded stem |54 adapted' to bethreadedinto The casing, however, is compact anda collar 56 in the end of theexpansible member. This stem has a nut |55 adapted to be tightened onthe stem to retract the spring to any desired degree, and gage marks maybe provided on the nut and cover in order to indicate the expansion ofthe reservoir and consequently the amount of liquid that-may be chargedinto the casing. The

amount of liquid will vary to some extent with the mean temperature inwhich the device is set up for operation.

It is thought that the invention and numerous of its attendantadvantages will be understood from the foregoing description, and it isobvious that numerous changes may be made in the form, construction andarrangement of the several parts without departing from the spirit orscope of the invention, or sacricing any of its attendant advantages,the form herein described being a preferred embodiment for the purposeof illustrating the invention; and I do not herein claim the tube casing|1 per se, since the same forms the subject-matter of my co-pendingapplication, Serial No. 345,534, filed July 15, 1940, for Tube casingand support.

The invention is hereby claimed as follows:

l. A mounting for an X-ray tube comprising an elongated support member,and mounting means for carrying said tube on and in spaced relationshipwith respect to said support member for movement longitudinally of thesupport member and for swinging movement with respect to said supportmember whereby the tube may be positioned at will on one side of thesupport member within the area of a normal projection of said table andoutwardly of said area on another side of said support member.

2. A mounting for an X-ray tube comprising an elongated support member,a table, means to mount the support member at one side of the table,mounting means for carrying said tube on and in spaced relationship withrespect to said support member for movement longitudinally of thesupport member and for swinging movement with respect to said supportmember whereby the tube may be positionedat will on one side of thesupport member within the area of a normal projection of said table andoutwardly of said area on another side of said support member,-and meansto mount the tube on said mounting means for tilting movement about aplurality of axes.

3. A mounting for an X-ray tube comprising an elongated support member,a table, means to mount the support member at one side of the ta ble,mounting means for carrying said tube on and in spaced relationship withrespect to said support member for movement longitudinally of thesupport member and for swinging movement with respect to said supportmember whereby the tube may be positioned at will on one side of thesupport member within the area of a normal projection of said table andoutwardly of said area on another side of said support member, saidmounting means comprising a frame longitudinally movable on the supportmember, an arm pivoted on the frame for swinging movement about saidsupport member, and tube carrying means on said arm.

4. A mounting for an X-ray tube comprising'A an elongated supportmember, a table, means to mount the support member at one side of thetable, mounting means for carrying said tube on and in spacedrelationship with respect to said support member for movementlongitudinally of the support member and for swinging movement withrespect to said support member whereby the tube may be positioned atwill on one side of the support member within the area of a normalprojection of said table and outwardly of said area on another side ofsaid support member, said mounting means comprising a framelongitudinally movable on the support member, an arm pivoted on theframe for swinging movement about said support member, and tube carryingmeans on said arm, said tube carrying means comprising a yoke carried bysaid arm for tilting movement thereon about a. tilting axis.

5. A mounting for an X-ray tube comprising an elongated support member,a table, means to mount the support member at one side of the table,mounting means for carrying said tube on and in spaced relationship withrespect to said support member for movement longitudinally oi thesupport member and for swinging movement with respect to said supportmember whereby the tube may be positioned at will on one side of thesupport member within the area of a normal projection of said table andoutwardly of said area on another side of said support member, saidmounting means comprising a frame longitudinally movable on the supportmember, an arm pivoted on the frame for swinging movement about saidsupport member, tube carrying means on said arm, said tube carryingmeans comprising a yoke carried by said arm for tilting movement thereonabout a tilting axis, and means to support the tube on said yoke fortilting movement about an axis other than said tilting axis.

6. A mounting for an X-ray tube comprising an elongated support member,a table, means to mount the support member at one side of the table,mounting means for carrying said tube on and in spaced relationship withrespect to said support member for movement longitudinally of thesupport member and for swinging movement with respect to said supportmember whereby the tube may be positioned at will on one side of thesupport member Within the area of a normal projection of said table andoutwardly of said area on another side of said support member, saidmounting means comprising a frame longitudinally movable on the supportmember, an arm pivoted on the frame for swinging movement about saidsupport member, tube carrying means on said arm, said tube carryingmeans comprising a yoke carried by said arm for tilting movement thereonabout a tilting axis, and means to support the tube on said yoke fortilting movement about an axis other than said tilting axis, comprisinga tube casing enclosing the tube and forming bearing means for tiltinglysupporting the casing in said yoke.

7. A mounting for an X-ray tube comprising an elongated support member,and mounting means for carrying said tube on and in spaced relationshipwith respect to said support member for movement longitudinally of thesupport member, said elongated support member comprising a tubularcasing formed with an inwardly extending rib longitudinally of thesupport, and forming an internal track for a counterbalance weight. i

8. A mounting for an X-ray tube comprising an elongated support member,and mounting means for carrying said tube on and in spaced relationshipwith respect to said support member for movement longitudinally of thesupport member, said support member comprising a tubular` casing formedwith an outwardly extending rib longitudinally ofthe support member andforming an external track on the support member for said mounting means.

9. A mounting for an X-ray tube comprising an elongated support member,mounting means for carrying said tube on and in spaced relationship withrespect to said support member for movement longitudinally of thesupport member, said support member comprising a tubular casing formedwith an inwardly extending rib longitudinally of the support member andforming an internal track for a counterbalanced weight, said tubularcasing being also formed with an outwardly extending rib longitudinallyof the support member and forming an external track for said mountingmeans, and connections between said mounting means and saidcounterbalanced weight,

1). A mounting for an X-ray tube comprising an elongated support member,and mounting means for carrying said tube on and in spaced relationshipwith respect to said support member for movement longitudinally of thesupport member, said support member comprising a pair of sheet-metalchannels having opposed edges interconnected to form a tubular shell,said edges being interconnected with track forming members havingportions extending inwardly and outwardiy of said shell to form internaltracks for a counterweight and external tracks for said mounting means,and means comprising sheaves at the opposed ends of said support membercarrying iiexible means interconnecting the counterweight and saidmounting means.

l1. A mounting for an X-ray tube comprising an elongated support member,a table, carrier means to mount the support member at one side of thetable, and mounting means for carrying said tube on and in spacedrelationship with respect to said support member for movementlongitudinally of the support member, said mounting means beingswingable on and about said support member whereby to dispose the tubein position within the area of the vertical projection of the table andin position outwardly of said area, said support member. having portionsextending above and also below the plane of said table.

l2.. A mounting for an X-ray tube comprising an elongated supportmember, a table, carrier means to mount the support member at one sideof the table, mounting means for carrying said tube on and in spacedrelationship with respect to said support member for movementlongitudinally of the support member, said mounting means beingswingable on and about said support member whereby to dispose the tubein position within the area of the vertical projection of the table andin position outwardly of said area, said support member having `portionsextending above and also below the plane of said table whereby said tubemay be disposed above the table and also may be positioned beneath thetable, said mounting means comprising a tube casing, and means on saidcarrier frame forming a socket for receiving said casing beneath saidtable.

13. A mounting for an X-ray tube comprising an elongated support member,a table, carrier means to'mountr the support member at one side of thetabla-mounting'means for carrying said tube on and in spacedrelationship with respect to said support member for movementlongitudinally of the support member, said mounting means beingswinglable on and about said support member whereby to dispose thetubein position within the area of the vertical projection of the tableand in position outwardly of said area, said support member havingportions extending above and also below the plane of said table wherebysaid tube may be disposed above the table and also may be lpositionedbeneath the table, said mounting means comprising a tube casing, meanson said carrier frame forming a socket for receiving said casing beneathsaid tabie, shutter means on said carrier means at said socket, auoroscopic screen tiltably mounted on the support member andpositionable thereon to overlie the table, and remote control means forsaid shutter means disposed on the support member and operable thereonadjacent said screen.

14. A mounting for an X-ray tube comprising an elongated support member,a table, carrier means to mount the support member at one side of thetable, mounting means for carrying said tube on and in spacedrelationship with respect to said support member for movementlongitudinally of the support member, said mounting means beingswingable on and about said support member whereby to dispose the tubein position within the area of the vertical projection of the table andin position outwardly of said area, said support member having portionseX- tending above and also below the plane of said table whereby saidtube may be disposed above the table and also may be positioned beneaththe table, said mounting means comprising a tube casing, means on saidcarrier frame forming a socket for receiving said casing beneath saidtable, shutter means on said carrier means at said socket, a uoroscopicscreen and a bracket carrying said screen turnably on the support memberin position to overlie said table, and remote control means for saidshutter means disposed on and operable at said bracket.

JULIUS J. GROBE.

